<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1> 后台管理 </h1>

<form action="/api/user/signIn" method="post">
    用户名<input type="text">
    密码<input type="password">
<button type="submit">登录</button>
</form>

</body>
</html>